【正确答案】 A

【答案解析】[听力原文] The social media company Facebook has opened its first African headquarters in Johannesburg, South Africa. Facebook representatives recently gathered in the city to celebrate the opening of the new office. They hope it will bring new users to the site and grow opportunities for both users and businesses. In recent years, Facebook has made efforts to reach out to Africa. The company introduced a modified version of its app for lower-end phones. They also launched so-called 'missed call ads.' Users can click on the 'missed call ads' to receive music, sports scores or messages from the advertiser at no cost. Facebook also has pushed for widespread and free Internet access. The company has partnered with mobile phone companies to offer free airtime for phone users who use Facebook and other selected sites. One project was recently started in the southern African nation of Angola. Ebele Okobi is the head of public policy for Facebook in Johannesburg. She says the company's goals are not complex. 'We want to learn more about Africa, and we also want to serve consumers as well as businesses across the continent.' Ms. Okobi adds that Facebook plays an important role in African society and politics. Question: What is Facebook's recent move in Africa?